Differential CQI encoding for cooperative multipoint feedback

摘要

A method includes receiving in a mobile communication terminal signals from multiple cells that coordinate transmission of the signals with one another in a Cooperative Multipoint (CoMP) scheme. At least first and second Channel Quality Indicators (CQIs), for respective communication channels over which the signals are received, are calculated in the terminal based on the received signals. The second CQI is differentially encoded relative to the first CQI. Feedback information, including the first CQI and the differentially-encoded second CQI, is transmitted from the terminal.

主权项

1. A method, comprising:
receiving in a mobile communication terminal signals from multiple cells that coordinate transmission of the signals with one another in a Cooperative Multipoint (CoMP) scheme; calculating in the terminal, based on the received signals, at least first and second Channel Quality Indicators (CQIs) for respective communication channels over which the signals are received, wherein the first or the second CQI is calculated for a communication channel from one of the cells that is designated for fallback to single-transmission-point transmission to the terminal; differentially encoding the second CQI relative to the first CQI; and transmitting feedback information, comprising the first CQI and the differentially-encoded second CQI, from the terminal.